Furnace construction



Jan. 1, 1929." 1,696,907

I J. C. FISCHER FURNACE CONSTRUCTION Filed Dec. 1926 Patented Jan. 1,1929- UNITED STATES PATENT OFFICE.

JOSEPH C. FISCHER, OF WAUWATOSA, WISCONSIN, ASSIGNOR OF ONE-HALF TOMELVIN D. JOHNSON, 0F MILWAUKEE, XVISCONSIN.

FURNACE oon'srnuorron.

Application filed December 8, 1926'. Serial No. 153,341.

This invention relates to certain new and useful improvements in furnaceconstructions and refers more particularly to the dead plate located atthe forward end of a furnace firing chamber and the ash pit along thegrate line.

Due to the intense heat to which these plates are subjected, they soonbecome warped or burnt out and need replacing and it has been a verydifficult operation to replace the same as heretofore they have hadtheir ends embedded in the brick of the furnace necessitatinc; theremoval of the jambs to replace the same. Attempts have been made toovercome this diliiculty as evidenced by the patent to Pcttie, No.1,223,828, issued April 24, 1917, wherein a reversible dead end plate isprovided which, when warped, may be turned and which when burnt out maybe renewed without destroying the brick of the furnace j amb or arch.

This invention contemplates a novel removable furnace dead plate whichmay be instantly removed for replacement and which has means forsecuring the same against accidental detachment or against shifting ofthe same on its support.

And a further object of this invention is to simplify and improve theconstruction of furnace dead plates.

lVith the above and other objects in view whi ch will appear as thedescription proceeds, my invention resides in the novel construction,combination and. arrangement of parts substantially as hereinafterdisclosed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

in the accompanying drawing, I have illustra ted one complete example ofthe physical embodiment of my invention constructed ac cording to thebest mode I have so far devised for the practical application of theprinciples thereof, and in which:

Figure 1 is a front elevational view, with parts broken away and insection, of a furnace equipped with my improved dead plate, and V Figure2 is a perspective view of my improved dcad plate and its supportsdetached from the furnace structure.

Referring now more particularly to the accompanying drawing, the numeral5 desig nates the brick jambs of a furnace and 6 the arch of the openingto the fire chamber of the furnace. The front of the furnace is coveredwith a suit-able surfacing 7 and iron doors, not shown, normally closethe openings to the fire and ash chambers betweenthe jambs 5. on a levelwith the furnace grate, not shown, is a dead plate 8 which extends fromthe outer face of the jambs 5 to the grate, not shown, and heretoforethe dead plate has consisted of a. one-piece member having its endsembedded in the bricks forming the jambs 5 at the time the furnace isThe dead plate 8 has its side edges: 12 reduced to provide shoulders 13of a depth substantially that of the support shoulders 10, and theshoulders 13 are spaced apart slightly less than the distance betweenthe inner ends of the supports 9 and the overall length of the deadplate 8 is slightly less than the distance between the shoulders .11 ofthe supports so that the dead plate may be readily dropped onto thesupports 9 as shown.

Accidental shifting or dislodgment of the dead plate from the supportsis prevented by studs or projections 14 extended from the reducedportions of the dead plate and en gageable in slots of recesses 15 inthe reduced portions of the supports, cotter pins or dowel pins 16 beingpassed through openings 17 in the studs 14, if desired, to prevent theaccidental lifting of the dead plate from the supports.

From the. foregoing description taken in connection with theaccompanying drawings, it will be readily apparent to those skilled inthe art to which an invention of this character appertains that Iprovide a novel and improved dead plate construction which is extremelysimple in construction and which is readily removable for the purpose ofreplacement.

What I claim as my invention is: 1. In a furnace including brick Jambsdelinlng theside Walls of an opening leading into the furnace firechamber, a support en1-' bedded in each jainb with is outer .end,extended into the opening, the outer ends of the supports having theirupper surfaces re duced to provide a shelf, a dead plate having theunder surface of its outer ends reduced to fit the reduced ends ot thesupport ,and

adapted to 'be supported thereon, and studs projected from the reducedends of the dead plate and projectuble through recesses in the reducedends of the supports to prevent the accidental removal of the dead platefrom its supports.

2. In a furnace including brick jumbs defining the side Walls of anopening leading the studs from the under side of the supports.

In testimony whereof I hereunto afliX my signature.

JOSEPH C. FISCHER.

